Add some packages that are necessary to build

.gitlab-ci.yml

@@ -9,6 +9,8 @@ run_tests:
   stage: test
   image: registry.git.autistici.org/ai3/docker/test/python:master
   script:
+    - apt-get -q update
+    - env DEBIAN_FRONTEND=noninteractive apt-get install -qy --no-install-recommends libgirepository1.0-dev libcairo2-dev
     - tox
   artifacts:
     when: always